RBP4 inhibitor 1 (compound 43b) is an orally active and potent inhibitor of retinol-binding protein 4 (RBP4), exhibiting IC50 values of 28 nM and 110 nM for human and mouse RBP4, respectively. It effectively reduces blood RBP4 levels in mice, providing a long-lasting effect [1].
IRBP651-670(Interphotoreceptor retinoid-binding protein (651-670))是IRBP(亦称为retinoid-binding protein 3)的肽段,参与色素再生,通过将视黄醇和视黄醛从光感受细胞传输到视网膜色素上皮。在C57BL/6小鼠中,利用IRBP651-670诱导自身免疫性葡萄膜炎,这些小鼠携带H-2b单体型。用IRBP651-670(300 µg/动物)免疫增加了小鼠眼部IL-1β、IL-6、IL-17、TNF-α和IFN-γ水平,免疫细胞浸润及光感受器损伤。